| 摘要 |
<p>A purification system in which even waste water containing organic pollutions at a high concentration can be purified with high efficiency while suppressing generation of refuse. Since a dissolved oxygen supply unit is provided, oxygen can be supplied to the water to be treated in a purification tank in the form of dissolved oxygen. Furthermore, since a microorganisms sterilizing means is provided, and sterilized microorganisms can be fed back, as a supplementary nutrition source, to the water to be treated in the purification tank, activation of microorganisms is accelerated and the purification efficiency can be enhanced furthermore. As a result, clogging of a pass membrane can be prevented through reduction of solid matters even in case of waste water containing organic pollutions at a high concentration, and since the pass membrane can be used as a solid/liquid separating means, need for installing a large scale sludge settling tank is eliminated resulting in reduction of the facility cost and the space.</p> |
